Testing machine



April 20 1926. H. v. KOBIN TESTING MACHINE Filed'.Sept. 29, 1925 3.-She ets-Sheet 1 I li envzy 7411 0660 H. v. KOBIN TESTING MACHINE vAp 20 3 Sheets-Sneet 5 Filed Sept" 29,

Patented Apr. 20, 1926.

HENRY v. KOBIN, or INDIANAPOLIS, INDIANA, n'ssrenon r0 REAL SILKFHOSIIEQRY MILLS, or INDIANAPOLIS,- INDIANA,jA- COBLPORATION02E INDI NA. V

TESTING MACHINE.

Application fil'ed September 29, 1923. Serial No. 665,574.

To all whom it may concern;v

Be it known that I, HENRY V. Kon n, a citizen of the United States, residing at In dianapolis. in the county of Marion and State of Indiana, have invented certain new;- and useful Improvements in Testing Ma chines, of which the following'isa specifi-i cation, reference being had therein to the faccompanying drawing.

This nventioncompr'ses a testing ,machine. While it'is unrestricted in its application, it has'beenfound especially 0 a rics, particularly hosiery'fabri-cs.

It is contemplated among the 'ob ects oi the invention to produce a machine which will be simple, compact, and have parts which operate in duplicate from a common drive, so that a pair of hosiery,for example,"

may be tested at one time .and'each individual part be operated in unison or independentlyof theother.

Another ob'ect contemplated by'the invention is to provide a frictionproducing instrumentality operable "to wear the fabrlc to a predetermined degree and, when so'worn,

a circuit will be closed'to actuate mechanism' for cutting out the friction producing in; strum'ent-ality and rendering it further inoperative until new fabric is placed in the machine.

A still' further object of the invention'is to provide recording mechanism in connection with the other parts of the-machine which will reoordthe number of movements of the friction-producing mechanism which were necessary to produce wear through the fabric. V

Another object of the invention is the production of a machine, theoperation of which is wholly automatic after the parts are once put into operation, and further objects and advantages will in part be apparent and in. part be brought out more fully in the description which follows.

An embodiment of the invention is illustrated in the accompanying drawings, the following views being shown:

Figure 1 is a view in side elevation illustrating an arrangement of parts constituting amachine embodying one form of my in vention; I I

Fig. 2 is a view of the same in front elevation and looking at the machine from the r gh ide of Fi .1; p p

- 'F'g. '3 is .a-view, inxverticalzsection,on line 33 of Fi 1, and looking in. the direction :Fig. 4 is a fragmentary View in sh owing the right-hand portion of the 1 machine illustrated in Fig. 1;

5 isaxliagrammaticview of circuit used in connectionwith-the machine;

Fig. 6 1s a (letallVlcW 111 front elevation of a portion ofthe machine and its mounting;

same, a portion being in section on line 77 ofvFig. '6,'-and v Fig. 18 is a detail view in front elevation of one of the clutch-operating instrumentali ties. r r

In these-views, the reference-character 1 designates bed, support, or base, mounted on standards and with them constituting a frame for the machin'e. The machine itself comprises a motor 2,111 driv ng' -connection with a pulley 3, su1tab1y'- mounted on the top plan, I

05 Fig. 7 is a 'view'in'side "elevation of'the base." This pulley is in drivin'gconnection .Witliia second pulley 4,1splined to a shaft 5,

which is suitably journaledin supporting; 5

bearings 6 mounted on" the ba'se'ofthema' chine, and forclearness of "descriptionthis shaft will be herein referredto as the main drlve 'shaftof the machine;v :The drivefrom the motor -1s stepped up soas to give speed;

to the pulley-4, and this rotary motion of theshaftb is utilized to operate the other parts of the machine; As the machine lllllSf trated is designed for the 'testing of hosiery, the. pulley is disposed centrally of the drive shaft, intermediate the-supporting bearings 6, 6,,and the associated parts are arranged in duplicate on either side of the pulley.

Means for producing friction on material to be tested are provided, and as here shown comprise asupp'ort or anvil 7,. suitably mounted on abar .8, which spans a cutout portion 9 of the base and .is secured thereto but insulated therefrom by means of gaskets or insulating bushings and screws illustrated particularly in Fig. 7. On the upper portion of the anvil or support there is a knob ,or projection 10, adapted to present a limited surface of the material to a friction-element v11. This friction elem'ent' is in the form of-a weight-having a surface adapted to cooperate with the knob 10, or the material placed thereon, and be reciprocated back and forth on the knob. To this end, the element 11 is connected with a rod 13, suitably guided in an upstanding support 12; and at its other end it is attached to an eccentric 14, mounted on the main drive shaft 5. In the embodiment herein illustrated, there are two of these instrumentalities, one on either side of the central pulley 1, and the parts described are duplicated in each device.

Means'are provided for putting the fric tion-producing instrumentality into operation and for automatically cutting out the same when the material has been worn to a predetermined degree. As here shown, these means comprise a clutch 15 disposed between the central drive pulley 4L- and the eccentric 14, and through which the eccentric is placed in driving connection with the main drive shaft 5. A clutch-operating lever 16 is pivotally fulcrumed, as at 17, on a support rising from the bed of the machine and is connected with the clutch by means of an arm 18, best seen in Fig. 8. Associated with the clutch-operating lever is mechanism for locking the clutch in operative position and holding it there until automatically released after the material has been worn to the desired point. As here shown, this mechanism comprises an arm 19, which is in the nature of a pawl, pivotally mounted at one end on the clutch-operating lever 16,

and at its opposite end adapted to take into a notch or ratchet 20 on a bell-crank-lever 21. This lever is pivotally mounted on a support and has a short arm 22 extending outwardly under the free end of the ratchet 19 and a depending extended arm The arrangement is such that when the clutch is operated in one direction to connect up the drive and driven parts, the end of the arm or pawl 19 will take. into the ratchet or notch 20, the notch being placed slightly off center, and will, when in such position, hold the arm 23 at the limit of its movement to the right, as seen in Fig. 8 in full line. This mechanism constitutes a trigger or releasing mechanism for the clutch-operating lever and clutch, and means are provided which normally tend to move the clutchoperating lever into inoperative position. Such means, as here shown, comprise an arm 2 1 extending downwardly from the lever 16 and having secured to one end thereof a spring 25. As the parts just described are duplicated on the other side of the pulley 4; and work in the opposite direction, the other end of the spring 25 is shown secured to the lower end of the corresponding arm on the other clutch-lever. The action of the spring on the arm tending to throw the clutch into open position is resisted bv the pawl or trigger mechanism,

and means are provided for automatically releasing the trigger mechanism and permitting the spring to actuate the clutch.

11s here shown, such means comprise a buzzer or hammer forming part of an ordinary induction device 26, the hammer of which is adapted to strike the end of the arm 23 when the device has been energized, thus releasing the pawl 19 from the ratchet 20, and permitting the spring 25 to throw the clutch-lever 16 into inoperative position. The arrangement is such that the buzzer or hammer is energized when the wear on the fabric has reached a predetermined limit, and to this end there is an electrical circuit provided (best seen in Fig. 5) which includes a source of supply 2Yfrom which leads a line 28 grounded on a portion of the machine so as to be in electrical contact with the friction element 11. Anotherline 28 is secured to the bar 8 which carries the anvil or support 9, and is secured at its other end to one terminal 29 of the induction device 2-6. A line 29 extends from the other terminal of this device to'the source 27, thus completing the circuit.

Means are provided for controlling the starting. and stopping of the motor, and to this end there is provided a switch having contact fingers 30, with which there is adapt ed to cooperate a nnife or contact member 31, mounted on the clutch-lever 16 and movable into and out of contact with the fingers 30 as the clutch-operating lever 16 is moved into or out of operative position. Circuit lines connect the contact'fingers 30 with terminals of the motor, which isin turn connected with a source of power.

It will be seen that-when the fabric is between the friction-element 11 and anvil 9, the circuit will be open, and when the fric= tion-element and anvil come into contact, the circuit will be closed. Closing of the circuit energizes the induction device 26. This in turn produces release of the latch,

allowing the spring 25 to throw the clutch-' lever 16 into inoperative position and at the same time remove the contact member 31 from the contacts 30, cutting out the motor. This mechanism is duplicated on the other side of the machine, so that either device may be operated independently or both may be operated in unison.

Means are provided for recording the number of movements of friction-element 1.1 necessary to produce the desired amount of wear, and as here shown these means comprise a beveled pinion 33, mounted on the drive shaft. This beveled pinion is in driving connection, through suitable gearing with a counting mechanism 35, by means of which there is set up or registered the nu1n-- her of movements of the friction-element 11.

Means are also provided for holding the fabric to be tested in place on the anvil, and

forth, and while they have been described in" connection with the present embodiment, it

will be understood that I do not Wish to be limited to the precise form 'of this disclosure, as many changes inthe general structure and arrangement of the parts are within: thescope ofthe invention as set forth in the claims.

lVli'at I claim isz V 1... A testing machine comprising a support for material to be tested; a friction producinginstrumentality operatively associated with said support; means for actuating the friction-producing instrumentality; and mechanism automatically. render, ing inoperative the friction-producing instrumentality -when this 'instrumentality has produced a predetermined amount of wear on'the material. I 2. A testing machine comprising a support for material to be tested; a friction producing instrumentality operatively associated with said support; means for actuating the friction-producing instrumentality; mechanism automatically rendering inoperative the friction-producing instrumentality when this instrumentality has produced a predetermined amount of wear on the material, said friction-producing instrumentality including a friction-element; and means for moving said element in frictional contact with material placed on the support.

3. A testing machine comprising a sup.- port for material to be tested; a frictionproducing instriimentality operatively associated with said support; means for actuating the friction-producing instrumentality;

mechanism automatically rendering inopera-' tive the friction-producing instrumentality when this instrumentalityhas produced a predetermined amount of wear on the-ma terial said friction-producing instrumental-L ity including a friction-element; means for moving said el'ementin frictional contact with material placed on the support, said means including a driving member; and an eccentric-mechanism connecting the driving member and friction-element.

4. A testing machine comprising a support for materialto be tested; a friction producing instrumentality operatively associated with said support; means for actuating the friction-producing instrumentality; mechanism automatically rendering inop erative the friction-producing instrumentality when this instrumentality has produced a predetermined amount of wear on the material, said friction-producing instrumentality including a friction-element; means for moving said element in frictional contact With materialvplaoed on the support, said means including a driving member; an eccentric mechanism connecting the driving member and friction element; and clutch mechanism operatively ZLSSOClltQd-diltll the driving member and operable to connect and disconnect the driving member and friction-element. v v r V 5. A testing machine comprising a sup; port for material to be tested; a frictionproducing instrumentality operatively associatedwith said support; means for actuating the friction-producing instrumentality;

1 mechanism automatically rendering inoperative the friction-producing instrumentality a member and friction-element; clutch mechanism ope'ratively associated with the driving member and operable to connect and disconnect the driving member and friction-element;; and an 'instrumentality for holding theclutch in one position.

port for material to be tested; a friction producing instrumentality operatively associated with said support; means for actuating the frictioii-producinginstrumentality when this instrumentality has produced a ,6. Av testing machine comprising a supmechanism automaticaly rendering inoperative the friction-producing instrumentality when this instrumentality has produced a predetermined amount of wear on the material, said fricti-onproducing instrumentality including a friction-element; means,

- for moving said element in frictional contact -with= material placed onv the support; said means including a driving member; an eccentric mechanism connecting the driving 'member and'friction-element; clutch mechanism operatively associated with the driving member and' operable to connect and disconnect the driving member and frictionelement ;.and 1 an instrumentality for holding the clutch in one position; said instrumentality including a latch mechanism operatively associated with the clutch.

7. A testing machine comprising a support for material to be tested; a frictionproducing instrumentality' operatively as-' sociated with said support; means for actuating the friction-producing instrumen- 1 tality; mechanism automatically rendering inoperative thefriction-producing instrumentality when this instrumentality has produced a predetermined amount of wear on the material, said friction-producing ,instrumentalityincluding a frictionselement; means for moving said element in frictional contact with material placed on the support, said means including a driving member; an eccentric mechanism connecting the driving member and friction-element; clutch mechanism operatively associated with the driving member and operable to connect and disconnect the driving member and friction element; an instrumentality for holding the clutch in one position; said instrumentality including a latch mechanism operatively associated with the clutch; and means exerting pressure against the latch mechanism tending to move the clutch when the latch is released.

8. A testing machine comprising a support for material to be tested; a frictionproducing instrumentality operativ-ely associated with said support; means for actuat ing the friction-producing instrumentality; mechanism automatically rendering inoperative the friction-producing instrumentality when this instrumentality has produced a predetermined amount of wear on the material, said friction-producing instrumentality including a friction-element; means for moving said element in frictional contact with material placed on the support, said means including a driving member; an cecentric mechanism connecting the driving member and friction-element; clutch mechanism operatively associated with the driving member and operable to connect and disconnect the driving member and frictionelement; an instrumentality for holding the clutch in one position; said instrumentality including a. latch mechanism operatively as- (ill sociat-ed with the clutch; means exerting pressure agains the latch mechanism tending to move the clutch when the latch is released; and means for releasing the latch mechanism.

9. A testing machine comprisin a support for n'iaterial to be tested; a friction-producinginstrumentalit-y operat-ively associated with said support; means for actuating the friction-producing instrumentality; mecha' nism automatically rendering inoperative the friction-producing instrumentality when this instrumentality has produced a predetern'iine-d amount of wear on the material, said friction-producing instrument-alit3 including a friction-element; means for moving said element in frictional contact with material placed on the support, said means including a driving member; an eccentric mechanism connecting the driving member and friction-element; clutch mechanism operatively associated with the driving member and operable to connect and disconnect the driving member and friction-element; an instrtimentality for holding the clutch in one position; said instrumentality including a latch mechanismoperatively associated with the clutch; means exerting pressure against the latch mechanism. tending to move the clutch when the latch is released; means for releasing the latch mechanism, said means including an electrical circuit; and a magnet in said circuit adapted to operate the latch mechanism'when the magnet is actuated.

10. A testing machine comprising a support for material to be tested; a frictionproducing instrumentality operatively associated with said support; means for actuating the friction-producing instrumentality; mechanism automatically rendering inoperative. the friction-producing instrumentality when this instrumentality has produced a predetermined amount of wear on the material, said friction-producing instrum-entality including a friction-element; means for moving said element in frictional contact with material placed on the support, said means including a driving member; an eccentric mechanism connecting the driving member and friction-element: clutch mechanism op-eratively associated with the driving member and operable to connect and disconnect the driving member and friction-element; an instrumentality for holding the clutch in one position; said instrumentality including a latch mechanism operatively associated with the clutch; means exerting pressure against the latch mechanism tending to move the clutch when the latch is released; means for releasing the latch mechanism, said means including an electrical circuit; a magnet in said circuit adapted to opcrate the latch mechanism when the magnet is actuated; and a connection between the magnet and friction-producing mechanism whereby the magnet will be operated when the frictionhas reached a predetermined limit.

11. A testing machine comprising a sup port for material to be tested; a frictionlfdOtlllClllQ instrnmentality operatively associated with said support; means for actuating the friction-producing instrumentality; 1n chanism automatically rendering inoperative the friction-producing instrumentality when this instrumentality has produced a predetermined amount of wear on the material, said friction-producing instrumentality inchiding a friction-element; means for moving said element in frictional contact with material placed on the support, said means including a driving member; an cecentric mechanism connecting the driving member and friction-element; clutch mechanism operatively associated with the driving member and operable to connect and disconnect the dirking member and friction element; an instrumentality for holding the clutch in one position; said instrumentality including a latch mechanism operatively associated with the clutch; means exerting pressure against the latch mechanism tending to move the clutch when the latch is released; means for releasing the latch mechanism, said means including an'ele'ctri'cal cir cuit;fa magnet in said circuit adaptedf'to" ope-rate the latch mechanism when'the magnet is'actuated; and a motor for operating the. driving member connected with said circuit.'- I 1 i I 12. A testing machine comprising a support for-material to be tested; a frictionproducing instrumentality operatively as i sociated with said support; means for actuating the friction-producing instrumenta1- ity; mechanism automatically rendering inoperative the friction producing instrumenta'I-ity when this instrumentality has produced a predetermined amount of wear on the material, said friction-producing instrumentality including a? friction elelnentg means for moving said element in frictional contact with material placed on the support,

said means including a driving member; an

eccentric mechanism connecting the'driving' member and friction-element clutchmecha'g nism operatively'associated with the driving" 7 mem'ber'and operable to connect and discon nect vthe driving member"; and friction-' element; an instrumentality for holding the clutch in one position; said instrumentallty including a; latch mechanism operatlvely as sociated 'with the" clutch; means exerting pressure against the latch mechanism tending'tomove-the'clutch when. the latch is released; means for releasing'the latch mechanism, said means including an electrical circuit; a magnet in said circuit adapted to operate the latch mechanism when thejmagnet is actuated; a motor for operating the driving member connected with said'circuit and'mechanism for controlling the motor' connected with the latch mechanism and operable upon actuation of thel'atchmecha;

nism. v e

13'. A testing machine comprising a support for material to be tested; a fr1ct1'0n V producing instru'mcntality operativel-y associated' with said support; means for actuating the; fraction-producing instrumental'lty;

mechanism automatically rendering inop-e.

erative the friction-producing instrumentality when thls instrumental'ity has produced a predeterminedamount' of wear on the ma-,1

terial, said frictionproducing'instrumentality including a friction-element; means for moving said element in frictional contact with material placed on the support said means inclu'dingfa driving member; an ec centric mechanism connecting [the driving member and friction-element 'cli1tch mechanism operatively associated with'the driving memberland operable to connect anddisconnect the driving member and friction-element; an instrumentality for holding the i I e a rod jdirectl'y connecting the eccentric. and Q sociated withthe clutch; means. exerting,

pressure against thelatch mechanism tendfor moving thee'l'ement relative to motor; a friction element ing' to move the clutch when the latch is released means for releasing the latch mechanism, said means including an electrical circuit; a'magnet in said circuit adapted to opcrate the latch mechanism when the magnet is actuated; a motor for operatin the, driving member connected with sai circuit; mechanism for controlling the motor connected with the latch mechanism and operabl'e upon actuation of the latch media-1 nis 1n, sa id mechanism including? switch 'disposed in the. circuit; and a switch-controlling element connected with the clutchand'operable by movementof' the clutch. i i r 14. A testing machine comprising, a stationary support for fabric to be tested; a mo-'; tor; a drive shaft in driving connection with the motor; a frictionelement normally'resting on the fabric on saidsupport; means for moving the element relative to the support to produce friction; said means comprising an eccentric connected with the drive shaft; and 1 mechanism operatively connecting the l eccentric and element; r t i 15'. A testing machine comprising. a stamechanism operatively associated with the loo drive shaft and operable to connect and disconnect the element with the shaft.

16. A testing machine comprising. a stati'onary support for fabric to "be tested; a.

motor; adrive shaft in driving-connection with the motor; a friction element normally resting on: the fabric on said support; means v the sup port to produce friction; said means come,

prising an eccentric connected with the drive 1 shaft; mechanism operatively connecting. ethe ec'centrlc and element; a clutch mocha nism operatively associated with the drive;

shaft and operable to connect'and discon-c.

nect the element with the shaft; and means,

includinga springele'ment, connected with the clutch anol tending to hold it'in one poit'ien. I

17. A testing machine comprising a support for materia'lto be tested; a motor; a

drive shaft in driving connection with the operatively as; sociated with the support; means for moving one of these members relatively to the other to produce friction, said means comprising aneccentric connected with the drive shaft; 7

element 'to be moved; ai'clutch mechanism 'oo 7 tionary support for fabric to be tested; a

element to be moved with the shaft; means, 1

port for material to be tested; a motor; a

drive shaft in driving connection with the motor; a friction element operatively associated with the support; means for moving one of these members relatively to the other to produce friction, said means comprising an eccentric connected with the drive shaft; mechanism connecting the eccentric and element to be moved; a clutch mechanism operatively associated with the drive shaft and operable to connect and disconnect the element to be moved with the shaft; means, includin g a spring element, connected with the clutch and tending to hold it in one position; latch mechanism operatively associated with the clutch and adapted to resist the movement of the clutch under the influence of the spring when the latch mechanism is set, said latch mechanism comprising a lever provided witn ratchet; and a pawl connected with the clutch and ratchet.

19. A testing machine comprising a support for material to be tested; a motor; a drive shaft in driving connection with the motor; a friction element operatively associated with the support; means for moving one of these members relatively to the other to produce friction, said means comprising an eccentric connected with the drive shaft; mechanism connecting the eccentric and element to be moved; a clutch mechanism operatively associated with the drive shaft and ope able to connect and disconnect the element to be moved with the shaft; means, including a spring element, connected with the clutch and tending to hold it in one position; latch mechanism operatively associated with the clutch and adapted to resist the movement of-the clutch under the influence of the spring when the latch mechanism is set, said latch mechanism comprising a lever provided with a ratchet; a pawl connected with the clutch and ratchet; and mechanism for operating the lever to release the pawl from the ratchet.

20. A testing machine comprising a support for material to be tested; a motor; a drive shaft in driving connection with the motor; a friction element operatively associated with the support; means for moving one of these members relatively to the other to produce friction, said means comprising an eccentric connected with the drive shaft; mechanism connecting the eccentric and element to be moved; a clutch mechanism operatively associated with the drive shaft and operable to connect and disconnect the element to be moved with the shaft; means, including a spring element, connected with the clutch and tending to hold it in one-position; latch mechanism operatively associated with the clutch and adapted to resist the movement of the clutch under the influence of the spring when the latch mechanism is set, said latch mechanism comprising a lever provided with a ratchet; a pawl connected with the clutch and ratchet; mechanism for operating the lever to release the pawl from the ratchet, said mechanism including an electrical circuit; and a magnet connected therewith and operatively associated with the lever on the latch mechanism whereby the lever will be operated to release the pawl when the magnet is operated;

21. A testing machine comprising a support for material to be tested; a motor; a drive shaft in driving connection with the motor; a friction element operatively associated with the support; means for moving one of these members relatively to the other to produce friction, said means comprising an eccentric connected with the drive shaft; mechanism connecting the eccentric and element to be moved; a clutch mechanism op eratively associated with the drive shaft and operable to connect and disconnect the element to be moved with the shaft; means, including a spring element, connected with the clutch and tending to hold it in one position; latch mechanism operatively associated with the clutch and adapted to resist the movement of the clutch under the influence of the spring when the latch mechanism is set, said latch mechanism comprising a lever provided with a ratchet; a pawl connected with the clutch and ratchet; mechanism for operating the lever to release the pawl from the ratchet, said mechanism including an electrical circuit; a magnet connected therewith and operatively associated with the lever on the latch mechanism whereby the lever will be operated to release the pawl when the magnet is operated; and a connection between the circuit and friction-producing mechanism whereby the magnet will be operated when the friction has reached a predetermined limit.

22. A testing machine comprising a support for material to be tested; a motor; a drive shaft in driving connection with the motor; a friction element operatively associated with the support; means for moving one of these members relatively to the other to produce friction, said means comprising an eccentric connected with the drive shaft; mechanism connecting the eccentric and element to be moved; a clutch mechanism operatively associated with the drive shaft and operable to connect and disconnect the 1 element to be moved with the shaft; means,

"sition; latch mechanism] operatively asso ciated with the clutch and adapted to resistthe clutch and tending to hold it in one pothe movement of the clutch under the influence of the spring when the latch mechanism is set, said latch mechanism comprising a lever provided with a ratchet; a pawl connected'with the clutch and ratchet; mechanism for operatingthelever to release the pawl from the ratchet, said mechanism in-- cluding an electrical circuit; a magnet connected therewith and operatively associatedon the latch mechanism;

with the lever whereby the lever will'be operated torelease the pawl when the magnet is operated;i a

connection between'the circuit and frictionproducing mechanism whereby the magnet '.r1al-'sustaining instrumentality; a wear-prowill be operated when. the friction has reached a predetermined limit; and a con trol switch for themotor included in the circuit and connected withthe motor.

23. A testing machine'comprising a support for material to be tested; a motor;

drive shaft in driving connection with the motor; a friction element operativelyassociated with the support; means for moving one of these members relatively to the other to produce friction, said means comprising an eccentric connected with the drive shaft; mechanism connectingthe eccentric and element tobe moved; a clutch mechanism operatively associated with the drive shaft and operable to connect and disconnect the ele-.

ment to be moved with the shaft; means, in-

cluding a spring element, connected with the clutch and tending to hold it in one position; latch mechanism operatively-associated with the clutch and adapted to resist the movement of the clutch under the influence of a spring when the latch mechanism is set, said latch mechanism comprising a lever provided with a ratchet; a pawl connected with the clutch and ratchet; mechanism for operating the lever to release the pawl from the ratchet; said mechanism including an electrical circuit; a magnet connected there-; with and operatively associated with the lever on the latch mechanism whereby the le-' ver will be operated to release the pawl when the magnet is operated; a connection between the circuit and friction-producing mechanism whereby the magnet willbe operated when the friction has reached'a predetermined limit; a control switchlfor the motor included'in the circuit and connected with the motor; and mechanism connected the clutch will :operate' the tionary support for fabrictobe tested; a

motor; a drive shaft in driving connection with the motor; a friction element normally resting on the fabric on said support;'means for moving the element relative to the supportto produce friction; said means comprising an eccentric connected with the drive shaft; mechanism rop eratively connecting V1 the eccentric andelement;'and a registering mechanism operatively associated with the drive shaft and friction element. for registering theamount of friction produced.

25. A testing machine includinga mateducing instrumentality associated therewith; mechanism' for producing relative movement between said instrumentalities to test the wearing capacity of material on the registering sustaining instrumentality means associated with said movement-prd' ducing mechanism; and electrical means associated with said mechanism for automatically bringing the same to rest when a predetermined amount of wear has been produced on the material;

26. A testing machine including a stafor producing relative movement between a.

said instrumentalities to test the wearing capacity of the material on the sustaining instrumentality. I

27. A testing machine including a stationary materialsustaining instrumentality,

a wear-producing instrumentality associated therewith and including a weight having a friction surface normally resting on the material on the sustaining 'instrumentality,

mechanism forproducing reciprocatory movement of the wear-producing instrumentality with reference to said materialsustaining instrumentality to test the wearing capacity 'of material on the latter, and registering means associated with; said movement-producing mechanism. In testimony whereof I atfix my signa ture. Y 1

HENRYiV. 1m 

